BLAST2SRS, a web server for flexible retrieval of related protein sequences in the SWISS-PROT and SPTrEMBL databases.

Nucleic Acids Res. 2003 Jul 1;31(13):3792-4.

Bimpikis K, Budd A, Linding R, Gibson TJ.

SRS (Sequence Retrieval System) is a widely used keyword search engine
for querying biological databases. BLAST2 is the most widely used tool
to query databases by sequence similarity search. These tools allow
users to retrieve sequences by shared keyword or by shared similarity,
with many public web servers available. However, with the increasingly
large datasets available it is now quite common that a user is
interested in some subset of homologous sequences but has no efficient
way to restrict retrieval to that set. By allowing the user to control
SRS from the BLAST output, BLAST2SRS (http://blast2srs.embl.de/) aims
to meet this need. This server therefore combines the two ways to
search sequence databases: similarity and keyword.